Abstract: In a wheel cleaner for the cleaning of truck wheels solely by centrifugal action, a weigh beam is incorporated whereby the individual axle loadings and the total weight of the truck can be determined. At the center of a wheel cleaner frame that is set into the ground, pairs of transverse horizontal rollers are provided on which the truck wheels can be spun to throw off mud, stones etc. At the end of the frame a transverse weigh beam, having its top surface substantially at the same level as the tops of the rollers and the frame members, is carried for limited downward travel on end suspension mountings each incorporating a load cell. The load cells give analogue electrical signals that are converted to digital form and processed to derive individual axle loadings and vehicle payload.

Abstract: The indicator of this invention comprises a product "empty" signal means actuated responsive to the product container achieving an empty condition, automatically actuating the empty signal means, to provide a visual empty signal, so that the user will be automatically signalled as to the need for replenishment when that occurs. The invention comprises a container movably received in a casing and normally urged to one (full) position responsive to balancing thereof on pressure means, and signal empty means positioned in the area of the container and interconnected with an intermediate mechanism activated on movement of the container, when empty, responsive to said pressure means. Prior to the container empty condition the pressure means will be inadequate to move the container to the point required to actuate the empty signal means.